Walking 

7. Treadmill Walking

Why It’s Good: The treadmill enables you to go easy (and hold handlebars for support), pick up the pace or “climb” simulated hills, so you can vary your workout according to how you feel.

Do It Safely: Start slowly, 10 to 15 minutes at a time three or more days per week for a week or two, increasing duration by five to 10 minutes per week, advises Reyes. When you can comfortably walk 30 minutes on a flat surface, gradually up the pace and/or add an incline.

Cautions: Bumping up the incline beyond five to 10 percent could stress your joints.

8. Walking Outdoors

Why It’s Good: All walking helps relieve arthritis pain, strengthen muscle and reduce stress, but you also get the benefit of being outside – a proven stress reliever.

Do It Safely: Stick to smooth, dirt trails if you can – they’re kinder to joints than asphalt or concrete. Plus, “Walking on uneven terrain can aggravate arthritis in your hips, knees and feet,” adds Reyes.

Cautions: Walking downhill can stress your knees.

A Faster Pace

9. Cycling

Why It’s Good: Indoors or outdoors, cycling works all the muscles in your lower body – even your feet.

Do It Safely: Adjust the seat height so that when your leg is extended on the down pedal, your knee is slightly bent. If you ride outside, wear padded cycling gloves to absorb shock and avoid handlebars that cause you to hunch over, which increases stress on your hands, wrists and elbows.

Cautions: Upright stationary and outdoor bikes can aggravate back or knee problems. The solution might be a recumbent bike, which supports your back with your legs extended.

10. Cross-Country Skiing

Why It’s Good: You can get a moderate to vigorous total-body workout. Unlike downhill skiing, there’s little twisting and turning of the knees.

Do It Safely: A lesson is the best way to learn how to coordinate your arms and legs and how to fall and get back up with minimal strain.

Cautions: Not recommended for someone who has moderate to severe arthritis in the upper or lower body.

11. Elliptical Machine

Why It’s Good: “Because part of the work is done by the machine, and because your joints go through a fluid, circular motion, there’s less stress and strain on your lower body,” says Reyes.

Do It Safely: Start with 10-minute sessions for the first few weeks, increasing time by five to 10 minutes a week.  Begin at the lowest (easiest) slope and resistance settings.

Cautions: If you have balance or coordination issues, this may not be the machine for you.